[SIPForum-discussion] FAX Issue in VoIP
Brent Shaw
Brent.Shaw at airespring.com
Thu Sep 9 18:13:33 UTC 2010
The errors that you list make it look like you are not even getting a
successful connection/negotiation. Do you actually connect, and then the
failure occurs during transmission? If so, you might want to check the
following settings:
t38 max-bps rate <value>
t38 max-buffer size (Had to adjust from default 200, to 262)
t38 max-datagram (Had to adjust from default 72, to 176)
Check the SDP offer when the T.38 session is initiated.
Your default values may be different
Brent
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of murali shankar
Sent: Wednesday, September 08, 2010 8:28 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] FAX Issue in VoIP
Dear All,
Whenever am trying to send multiple pages in FAX over VoIP
at a single attempt the FAX is getting failed .Whereas for the same
number the FAX is going fine for single Paper.Can any one help me out?
Voip Gateway: Free Switch PBX.
Protocol: T.38
Codec: G.729A & G.711U
Baud rate: 9000 to 14400
Errors:
1. Busy Signal Detected.
2.No response to pps repeated 3 times.
3.Failed to train remote modem at 2400 BPS or minimum speed.
Please suggest.
Regards,
Murali
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